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authorHauke Mehrtens <hauke@hauke-m.de>2012-04-29 02:18:50 +0200
committerJohn W. Linville <linville@tuxdriver.com>2012-05-16 12:45:22 -0400
commit29f6b3d823885093890b1604d8450e7b57a31281 (patch)
treeed9f92e732c742a1fc5931372cb58a4adf89f6d4
parent0b2948eeb128e259b7903b12de79d6886d43eb11 (diff)
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bcma: add bcma_core_pci_extend_L1timer
This code is based on code from pcie_extendL1timer() in brcmsmac. This patch is part of the move of pci specific code from brcmsmac to bcma. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Tested-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--drivers/bcma/driver_pci.c16
-rw-r--r--include/linux/bcma/bcma_driver_pci.h2
2 files changed, 16 insertions, 2 deletions
diff --git a/drivers/bcma/driver_pci.c b/drivers/bcma/driver_pci.c
index 4d38ae179b4..949206674dc 100644
--- a/drivers/bcma/driver_pci.c
+++ b/drivers/bcma/driver_pci.c
@@ -24,14 +24,12 @@ u32 bcma_pcie_read(struct bcma_drv_pci *pc, u32 address)
return pcicore_read32(pc, BCMA_CORE_PCI_PCIEIND_DATA);
}
-#if 0
static void bcma_pcie_write(struct bcma_drv_pci *pc, u32 address, u32 data)
{
pcicore_write32(pc, BCMA_CORE_PCI_PCIEIND_ADDR, address);
pcicore_read32(pc, BCMA_CORE_PCI_PCIEIND_ADDR);
pcicore_write32(pc, BCMA_CORE_PCI_PCIEIND_DATA, data);
}
-#endif
static void bcma_pcie_mdio_set_phy(struct bcma_drv_pci *pc, u8 phy)
{
@@ -224,3 +222,17 @@ out:
return err;
}
EXPORT_SYMBOL_GPL(bcma_core_pci_irq_ctl);
+
+void bcma_core_pci_extend_L1timer(struct bcma_drv_pci *pc, bool extend)
+{
+ u32 w;
+
+ w = bcma_pcie_read(pc, BCMA_CORE_PCI_DLLP_PMTHRESHREG);
+ if (extend)
+ w |= BCMA_CORE_PCI_ASPMTIMER_EXTEND;
+ else
+ w &= ~BCMA_CORE_PCI_ASPMTIMER_EXTEND;
+ bcma_pcie_write(pc, BCMA_CORE_PCI_DLLP_PMTHRESHREG, w);
+ bcma_pcie_read(pc, BCMA_CORE_PCI_DLLP_PMTHRESHREG);
+}
+EXPORT_SYMBOL_GPL(bcma_core_pci_extend_L1timer);
diff --git a/include/linux/bcma/bcma_driver_pci.h b/include/linux/bcma/bcma_driver_pci.h
index 46c71e27d31..20c9f96d407 100644
--- a/include/linux/bcma/bcma_driver_pci.h
+++ b/include/linux/bcma/bcma_driver_pci.h
@@ -133,6 +133,7 @@ struct pci_dev;
#define BCMA_CORE_PCI_DLLP_LRREG 0x120 /* Link Replay */
#define BCMA_CORE_PCI_DLLP_LACKTOREG 0x124 /* Link Ack Timeout */
#define BCMA_CORE_PCI_DLLP_PMTHRESHREG 0x128 /* Power Management Threshold */
+#define BCMA_CORE_PCI_ASPMTIMER_EXTEND 0x01000000 /* > rev7: enable extend ASPM timer */
#define BCMA_CORE_PCI_DLLP_RTRYWPREG 0x12C /* Retry buffer write ptr */
#define BCMA_CORE_PCI_DLLP_RTRYRPREG 0x130 /* Retry buffer Read ptr */
#define BCMA_CORE_PCI_DLLP_RTRYPPREG 0x134 /* Retry buffer Purged ptr */
@@ -207,6 +208,7 @@ struct bcma_drv_pci {
extern void __devinit bcma_core_pci_init(struct bcma_drv_pci *pc);
extern int bcma_core_pci_irq_ctl(struct bcma_drv_pci *pc,
struct bcma_device *core, bool enable);
+extern void bcma_core_pci_extend_L1timer(struct bcma_drv_pci *pc, bool extend);
extern int bcma_core_pci_pcibios_map_irq(const struct pci_dev *dev);
extern int bcma_core_pci_plat_dev_init(struct pci_dev *dev);